607-60-3Relevant academic research and scientific papers
Novel long alkyl side chain benzo[a]phenoxazinium chlorides: synthesis, photophysical behaviour and DNA interaction
Alves, Carla M.A.,Naik, Sarala,Coutinho, Paulo J.G.,Gon?alves, M. Sameiro T.
, p. 10441 - 10452 (2009)
Several fluorescent benzo[a]phenoxazinium chlorides possessing a propyl-, octyl-, decyl-, dodecyl- or tetradecylamino at the 5-position of the heterocyclic moiety were efficiently synthesised. The absorption and emission maxima of all compounds lie in the
Synthesis of new benzo[a]phenoxazinium probes possessing carboxylic ester, hydroxyl and amino functional groups: Photophysical studies in dry ethanol and conjugation with CdTe quantum dots
Raju, B. Rama,Garcia, Arlindo M. Fontes,Costa, A. Luísa S.,Coutinho, Paulo J.G.,Gon?alves, M. Sameiro T.
, p. 203 - 213 (2014)
A new series of benzo[a]phenoxazinium chlorides possessing hydroxyl, ethyl ester and amino functional groups as terminal substituents at the 9- and 5-positions of the tetracyclic aromatic system in different combinations, was synthesized. A photophysical
BENZOPHENOXAZINE DERIVATIVES FOR DIAGNOSIS OF NEOPLASIA OR INFECTION
-
Paragraph 0063, (2019/10/29)
The present disclosure is related to the synthesis and applications of a benzo[a]phenoxazine. It displays good photophysical properties, such as high molar extinction coefficient, good fluorescence quantum yield and solubility in water. The present invent
Synthesis and photophysical properties of side-chain chlorinated benzo[a]phenoxazinium chlorides
Raju, B. Rama,Firmino, A. Daniela G.,Costa, A. Luísa S.,Coutinho, Paulo J.G.,Gon?alves, M. Sameiro T.
, p. 2451 - 2461 (2013/03/14)
Novel water-soluble benzo[a]phenoxazinium chlorides mono- or disubstituted with 3-chloropropyl groups at the amine of position 9, and also at the hydroxyl function at position 2, were synthesized. These compounds possessing one, two or three chlorinated t
N-(di)icosyl-substituted benzo[a]phenoxazinium chlorides: Synthesis and evaluation as near-infrared membrane probes
Naik, Sarala,Alves, Carla M. A.,Coutinho, Paulo J. G.,Goncalves, M. Sameiro T.
body text, p. 2491 - 2497 (2011/06/10)
Five benzo[a]phenoxazinium chlorides containing alkyl chains with twenty carbon atoms at the 5- or 9-positions of the tetracyclic ring were efficiently synthesised and characterised by UV/Vis and NIR spectroscopy. The absorption and emission maxima in ethanol occur in the range 627-641 nm and 645-676 nm, respectively, with quantum yields varying from 0.14 to 0.38. Preliminary photophysical studies with these fluorochromophores in zwitterionic [2,3-bis(palmitoyloxy)propyl-2-(trimethylammonio)ethyl phosphate, DPPC] and cationic (N,N-dimethyl-N-octadecyloctadecan-1-aminium bromide, DODAB) vesicles were carried out. The results showed that the new benzo[a]phenoxazinium derivatives are able to detect the gel to liquid-crystalline lipid phase transition through variations in either the extent of H-aggregation or in the acid-base equilibrium. Novel benzo[a]phenoxazinium chlorides possessing icosyl groups as substituents at the 5- or 9-positions of the tetracyclic ring were photophysically studied in both zwitterionic and cationic vesicles. The results revealed that these fluorochromophores are able to detect the gel to liquid-crystalline lipid phase transition through variations either in the extent of H-aggregation or in an acid-base equilibrium. Copyright
Efficient copper-catalyzed N-arylations of nitrogen-containing heterocycles and aliphatic amines in water
Li, Xufeng,Yang, Daoshan,Jiang, Yuyang,Fu, Hua
experimental part, p. 1097 - 1105 (2010/08/06)
A simple and efficient copper-catalyzed method has been developed for N-arylations of nitrogen-containing heterocycles and aliphatic amines in water. The protocol uses (1E,2E)-oxalaldehyde dioxime (OADO) as the ligand, and water as the solvent, and shows good tolerance towards various functional groups.
New long alkyl side-chain benzo[a]phenoxazines as micellisation probes
Alves, Carla M.A.,Naik, Sarala,Coutinho, Paulo J.G.,Gon?alves, M. Sameiro T.
experimental part, p. 4470 - 4474 (2009/12/03)
Several novel fluorescent benzo[a]phenoxazinium chlorides possessing a long aliphatic chain substituent at the 5-amino function of the heterocycle were efficiently synthesised. All compounds obtained absorbed and emitted at longer wavelengths with moderat
Synthesis of Pyrrolidines and Pyrrolidinones by the Rhodium Complex Catalyzed Cyclization of Unsaturated Amines
Zhou, Jian-Qiang,Alper, Howard
, p. 3328 - 3331 (2007/10/02)
N-Allylic arylamines react with carbon monoxide, sodium borohydride, 2-propanol, and catalytic amounts of the zwitterionic complex η6-C6H6BPh3-Rh(COD)+ (1), to form pyrrolidines as the main products in most cases.Pyrrolidinones result from N-allylic alkylamines.An alternate route to the lactams from N-allylic alkylamines involves synthesis gas instead of CO/NaBH4, together with the dual catalytic system 1/2.Complementary to the N-allylic arylamine route to pyrrolidines with NaBH4 and 1 is the use of synthesis gas, 1, and 1,4-bis(diphenylphosphino)butane.
